/*
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package io.trino.client;

import java.io.Closeable;
import java.util.Iterator;

/*
 * A CloseableIterator is an Iterator that must be closed to release resources.
 */
public interface CloseableIterator<T>
        extends Iterator<T>, Closeable
{
    static <T> CloseableIterator<T> closeable(Iterator<T> iterator)
    {
        return new CloseableIterator<T>()
        {
            @Override
            public void close()
            {
            }

            @Override
            public boolean hasNext()
            {
                return iterator.hasNext();
            }

            @Override
            public T next()
            {
                return iterator.next();
            }

            @Override
            public String toString()
            {
                return "CloseableIterator{iterator=" + iterator + '}';
            }
        };
    }

    @Override
    String toString();
}
